Saturday, June 22, 2013

ViewProp: more charts

This is a continuation from the last post. Let's look at some more.

2013 JIDX CW

(2013/4/13) SFI=125, SSN=148, A=6, K=2

(2013/4/14) SFI=116, SSN=111, A=12, K=3

  • This 30-hour contest starts at 7z Saturday and ends at 13z Sunday. So there is a 6-hour overlap. That means we have two chances of high-band EU openings and low-band NA openings.
  • Being situated during one of the best times for DX (mid-spring), both high and low bands open pleasantly for a good amount of time.

2013 RDXC

(2013/3/16) SFI=126, SSN=90, A=10, K=2

(2013/3/17) SFI=125, SSN=126, A=72, K=5

  • This is more of an European contest so not as many NA spots seen.
  • From JA fifteen is already closed at the outset so we start rather slowly on 20.
  • Toward the end of the 2nd day it suffered from geomagnetic activity somewhat.
  • On the 2nd day, ten meters, for Europe and Russia, dried out completely by 8z, followed by 15 at around 10z. Two hours to go but I almost gave up the contest here since I became quite empty-handed, other than picking up weak NA stations on 40 and 80. (I was operating mobile entering low power CW.) I was quite surprised when I saw 15 came back to life (though a little bit) in the last minutes!


(2013/2/16) SFI=103, SSN=75, A=8, K=1

(2013/2/17) SFI=105, SSN=74, A=9, K=1

  • This one is a NA vs DX contest so let's focus only on NA side.
  • Sunspots are not quite but thanks to geomagnetic serenity, it made a good contest.
  • Apparently this still shows a typical WINTER condition with shorter high band and longer low band openings.
  • Ten meters' rate peak from JA is always at 2230z to 2330z.
  • Looks like we can sleep 'safely' between 17z and 20z. (Of course you can play with scatter on 10m etc.)

2012 WAE CW

(2012/8/11) SFI=119, SSN=98, A=4, K=0

(2012/8/12) SFI=112, SSN=76, A=7, K=2

  • This is an EU vs DX test so forget about NA part now.
  • This I remember was a tough contest. Although geomagnetic was within OK limit, the sun was stagnating. F-layer seemed not thick enough for 10m and there are also not enough darkness for 80m to travel through to Europe. So 10 and 80 were almost nothing.

2012 IARU HF

(2012/7/14) SFI=147, SSN=120, A=19, K=2

(2012/7/15) SFI=140, SSN=134, A=78, K=5

  • This one also suffered from geomagnetic storm especially on the 2nd day.
  • A typical summer condition but fifteen was not much impressive.
  • Ten had minimal openings and 80 was almost nothing.

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